| /* |
| * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.security.acl; |
| |
| import java.security.Principal; |
| |
| /** |
| * Interface for managing owners of Access Control Lists (ACLs) or ACL |
| * configurations. (Note that the Acl interface in the |
| * {@code java.security.acl} package extends this Owner |
| * interface.) The initial owner Principal should be specified as an |
| * argument to the constructor of the class implementing this interface. |
| * |
| * @see java.security.acl.Acl |
| * |
| */ |
| public interface Owner { |
| |
| /** |
| * Adds an owner. Only owners can modify ACL contents. The caller |
| * principal must be an owner of the ACL in order to invoke this method. |
| * That is, only an owner can add another owner. The initial owner is |
| * configured at ACL construction time. |
| * |
| * @param caller the principal invoking this method. It must be an owner |
| * of the ACL. |
| * |
| * @param owner the owner that should be added to the list of owners. |
| * |
| * @return true if successful, false if owner is already an owner. |
| * @exception NotOwnerException if the caller principal is not an owner |
| * of the ACL. |
| */ |
| public boolean addOwner(Principal caller, Principal owner) |
| throws NotOwnerException; |
| |
| /** |
| * Deletes an owner. If this is the last owner in the ACL, an exception is |
| * raised.<p> |
| * |
| * The caller principal must be an owner of the ACL in order to invoke |
| * this method. |
| * |
| * @param caller the principal invoking this method. It must be an owner |
| * of the ACL. |
| * |
| * @param owner the owner to be removed from the list of owners. |
| * |
| * @return true if the owner is removed, false if the owner is not part |
| * of the list of owners. |
| * |
| * @exception NotOwnerException if the caller principal is not an owner |
| * of the ACL. |
| * |
| * @exception LastOwnerException if there is only one owner left, so that |
| * deleteOwner would leave the ACL owner-less. |
| */ |
| public boolean deleteOwner(Principal caller, Principal owner) |
| throws NotOwnerException, LastOwnerException; |
| |
| /** |
| * Returns true if the given principal is an owner of the ACL. |
| * |
| * @param owner the principal to be checked to determine whether or not |
| * it is an owner. |
| * |
| * @return true if the passed principal is in the list of owners, false |
| * if not. |
| */ |
| public boolean isOwner(Principal owner); |
| |
| } |